Armored Anima-Lock

[Deox]

Suppose one had a Binder / Warlock / Anima-Lock.

What ways could you go to be able to bind Savnok, used the called full-plate, and still get Dark level invocations?

[Kaje]

Can one take Battle Caster more than once?

[Deox]

I'm guessing not, as the text does not include the obligatory, "You may take this feat more than once. Its effects stack."

Edit: Though it does mention building already on your own ability. The description may imply that it's possible.